Programming Forums > Script Programming > Python

dezza · Jul 4th, 2009, 6:09 PM

import binascii
def getCRC(filename):
     filedata = open(filename).read()
     return binascii.crc32(filedata)

So far i've got this and it returns something like:

-2087276233

Someone told me that I had to use struct.pack or struct.unpack to change it to hex values.

I am not sure which type to convert to and would like some explanation to understand fully instead of coding in blind.

The final result should show the same CRC32 value as if you packed the file in WinRAR, checked it with the numerous SFV-checkers or whatever.

A link just in case:
http://docs.python.org/library/struct.html

Thanks alot in advance!

Jul 4th, 2009, 6:09 PM	#1
dezza Newbie Join Date: Mar 2005 Location: Denmark Posts: 23 Rep Power: 0	Calculate CRC32 checksums (like SFVs) (Toggle Plain Text) import binascii def getCRC(filename): filedata = open(filename).read() return binascii.crc32(filedata) import binascii def getCRC(filename): filedata = open(filename).read() return binascii.crc32(filedata) So far i've got this and it returns something like: -2087276233 Someone told me that I had to use struct.pack or struct.unpack to change it to hex values. I am not sure which type to convert to and would like some explanation to understand fully instead of coding in blind. The final result should show the same CRC32 value as if you packed the file in WinRAR, checked it with the numerous SFV-checkers or whatever. A link just in case: http://docs.python.org/library/struct.html Thanks alot in advance! __________________ Come in and have a talk! #programmingforums @ Freenode Folding@Home Stats

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Programming Forums > Script Programming > Python

Calculate CRC32 checksums (like SFVs)